Source/WebCore/dom/MutationRecord.h

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#pragma once

#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>

namespace JSC {

class SlotVisitor;

}

namespace WebCore {

class CharacterData;
class ContainerNode;
class Element;
class Node;
class NodeList;
class QualifiedName;

class MutationRecord : public RefCounted<MutationRecord> {
public:
    static Ref<MutationRecord> createChildList(ContainerNode& target, Ref<NodeList>&& added, Ref<NodeList>&& removed, RefPtr<Node>&& previousSibling, RefPtr<Node>&& nextSibling);
    static Ref<MutationRecord> createAttributes(Element& target, const QualifiedName&, const AtomString& oldValue);
    static Ref<MutationRecord> createCharacterData(CharacterData& target, const String& oldValue);

    static Ref<MutationRecord> createWithNullOldValue(MutationRecord&);

    virtual ~MutationRecord();

    virtual const AtomString& type() = 0;
    virtual Node* target() = 0;

    virtual NodeList* addedNodes() = 0;
    virtual NodeList* removedNodes() = 0;
    virtual Node* previousSibling() { return 0; }
    virtual Node* nextSibling() { return 0; }

    virtual const AtomString& attributeName() { return nullAtom(); }
    virtual const AtomString& attributeNamespace() { return nullAtom(); }

    virtual String oldValue() { return String(); }

    virtual void visitNodesConcurrently(JSC::SlotVisitor&) const = 0;
};

} // namespace WebCore